Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K1/00—Nibs; Writing-points
  • B43K1/003—Capillary nibs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
  • B43K—IMPLEMENTS FOR WRITING OR DRAWING
  • B43K8/00—Pens with writing-points other than nibs or balls
  • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
  • B43K8/026—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material with writing-points comprising capillary material

Definitions

• the present invention relates to a writing tip adapted to draw lines of various determined widths.
• a writing capillary tip comprising a body extending from a base along a central axis towards an apex, said body having a main face having a maximum dimension measured transversely with respect to the central axis, said maximum width, and delimited by a main base edge adjacent to the base, and a first and a second substantially rectilinear ridge, which are concurrent at the top and of respective lengths less than said maximum length.
• Writing tips of this type are commonly used in writing instruments such as felt pen, marker or highlighter.
• the top of the tip allows you to write or highlight by making a fine line.
• the main face, and most often two opposite major faces, allows positioning them against the plane of the sheet of paper, to make a large width, for example to emphasize or highlight a text.
• the summit ridge of greater length which is often substantially equal to the maximum length of the main face, as in the case of FIG. 2 of document DE-A-33 36 664, also makes it possible to carry out a wide-width trace. by contacting this edge against the sheet of paper and while allowing greater freedom of the angular position of the instrument. It is possible to perform the intermediate width plots by positioning the sorominal ridge obliquely to the direction of movement, but this requires a degree of dexterity which inevitably leads to variations in width during a curved path.
• the present invention therefore aims to provide a writing tip for performing plots in different precise and determined widths, namely at least three widths, and this by providing an easy and comfortable use.
• the subject of the present invention is a writing tip of the aforementioned type, characterized in that the body furthermore has a first secondary face delimited by a first base edge adjacent to the base, and by the first summit ridge;
• said first and second secondary faces having a substantially rectilinear common edge extending from the vertex to a lower end adjacent to the base, said common edge having a length different from the maximum width and the length of the first and second edges; apical.
• the maximum width, the lengths of the top edges and the length of the common edge, allow plots to be made in three different widths, and even four different widths if the first and second top edges are of different length.
• the common edge extending towards the base creates an additional tracing zone of clearly defined length, and this in a similar manner to the first and second summit edges.
• the spikes of the prior art which generally comprise only two summit edges, or two pairs of summit ridges, in the case of a non-point vertex, extending towards the base, one obtains thanks to the tip such as defined above a third edge extending towards the base.
• the possibilities of writing widths are increased while maintaining a very good writing comfort. These widths of course add course to the fine line that can be obtained with the top by positioning the writing tip substantially perpendicular to the sheet.
• the first and second summit edges have the same length, so that the writing tip can be used as easily by right-handed people as by left-handed
• the first top edge has a length between 40 and 80% of the maximum width
• the common edge has a length of between 30 and 60% of the maximum width and at least 15% less than the length of the first edge summit; these ratios between the length allow clearly differentiated writing widths while conferring a writing comfort for the user
• the main base edge is substantially rectilinear, and preferably of length substantially equal to the maximum width, thus the maximum width pattern can also be obtained using an edge, which allows greater freedom of movement. inclination of the writing instrument;
• the main face is flat, which allows to deposit a large amount of ink quickly,
• the base has a cross section relative to the central axis which is generally rectangular, this provision allowing a large amplitude between the width of the different paths without excessively increasing the size of the tip;
• the top of the writing tip is offset with respect to the central axis, and preferably offset on the side of the common edge, this arrangement making it possible to increase the difference between the maximum width and the length of the edge; common;
• the first and second summit edges form between them an angle in the plane of the main face, which is between 150 and 90 degrees, the experiment showing to preserve a good comfort of writing;
• the common edge forms with the central axis an angle of between 30 and 60 degrees, also for comfort writing;
• the body and the base are integrally formed by sintering a granular material made of synthetic resin, and preferably polypropylene.
• the invention also relates to a writing instrument comprising a drum containing ink and having at one front end an opening on which a tip as defined above is mounted, the base of the tip preferably projecting from the barrel of the instrument.
• FIG. 1 is a partial perspective view of a writing instrument comprising a writing tip according to the invention
• FIG. 2 is an enlarged front view of the writing tip
• FIG. 3 is a top view of the tip shown in Figure 2;
• FIG. 5 is a partial side view.
• a writing instrument 1 comprising a drum 2 inside which an ink tank is arranged and having, at a front end 2a, an opening in which a writing tip 4 is mounted.
• the ink tank 3 schematically shown in broken lines, is a well-known ink impregnated fibrous pad. But it could be any other type of ink supply, and especially a tank containing free ink.
• the writing tip 4 comprises a tip body 5 and a connector 6 integral with the body 5 which, in known manner, allows the writing tip to be mounted in the opening of the barrel 2 and the supply of the ink up to at the front end of the writing tip, i.e. the body 5 thereof.
• the body 5 and the connector 6 are made of capillary material for delivering the ink in a regular manner, and formed in one piece. It is however perfectly possible to provide a tip body and a connector in two elements or to provide an additional intermediate connector, according to the structure of the front end of the barrel and the nature of the liquid to be applied. As best seen in FIGS.
• the body 5 of the tip comprises a base 8 from which extend a main face 10, a first secondary face 20 and a second secondary face 30, up to a vertex 9
• the body 5 thus extends generally along a central axis Z coaxial with the center of the base 8, and in the embodiment shown, coaxial with the longitudinal axis of the connector 6.
• the base 8 is formed by a volume delimited by a flat rear face 8b, an annular side wall 8c and a front face, not referenced, of more or less complex shape, which is defined by the connecting edges between the annular wall 8c and the main and secondary faces
• the base 8 is in the form of a more flattened volume, or even a plan.
• the main face 10 is delimited by a rectilinear main base edge 11, by a first and a second sori-like ridges (13, 14) also rectilinear and intersecting at the apex 9.
• Complementary base edges 15 of reduced length make it possible to connect the ends of the main base edge 11 to the lower ends of the first and second summit edges (13, 14 ).
• These complementary base edges 15 are mainly due to the cross section of the base 8 which is in the shape of a rectangle with short sides in an arc of a circle, as can be seen in FIG. 2. But it is perfectly possible to predict that the first and second top edges (13, 14) extend to a straight main base edge.
• the main face 10 thus defined is flat to allow a pattern by applying this face integrally against a sheet of paper, which allows to deposit a large amount of ink.
• the main face 10 has a maximum dimension L measured transversely with respect to the central axis Z which is called the maximum width L.
• this maximum width L corresponds to the distance separating the lower end of the summit edges (13, 14). Note that this distance L is only slightly greater than the length of the main base edge 11 given the reduced length of the complementary base edges 15.
• the top edges (13, 14) have an identical length 1 in this preferred embodiment to allow easy drawing in a given length corresponding to this edge length 1_.
• the first secondary face 20 which is better visible in FIG. 2 is delimited in part by the first summit ridge 13 and an edge 23 common with the second secondary face 30.
• the common ridge 23 extends from the top 9 up to the base 8, and is rectilinear over a length m so as to allow a wide line with it.
• the first secondary face 20 is also delimited by a base ridge 24, rectilinear and inclined relative to the transverse plane of the body 5, and a complementary base edge 25 in an arc of a circle due to the end faces in an arc of a circle. the annular wall 8c of the base.
• the first secondary face 20 is not quite flat, therefore it is not expressly intended to draw lines by contact with the whole of this face.
• the second secondary face 30 is delimited by the second summit edge 14, the common edge 23 and the main base edges 34 and complementary 35.
• the second secondary face is therefore symmetrical to the first secondary face 20 with respect to a plane passing through the central axis Z and comprising the common edge 23.
• the second secondary face 30 is substantially different from the first secondary face 20, for example to provide a second summit ridge 14 in length different from the first.
• the first and second summit edges (13, 14) and the common edge 23 are common at the same point which forms the vertex 9 of the writing tip 4.
• this vertex has a point surface, arranged near the central axis, and is therefore particularly well suited for fine and precise tracing.
• the rounded point surface of the vertex allows a fine plot of constant width, that is to say without full and untied, holding the writing instrument almost vertical but regardless of the angular orientation of the tip around its central axis with respect to the writing direction.
• the body 5 provides in addition to the vertex 9, different faces and edges for performing a given width of widths.
• the maximum width L, the length 1. of the first and second top edges (13, 14), and the length m of the common edge 23 are different, the last two lengths being preferably less than the maximum width L.
• the length 1. of the summit ridges is between 40 and 80% of the maximum length L and preferably close to 50% of this length L.
• the common edge 23 has an length m between 30 and 60% of the maximum width and preferably a little more than 40% thereof.
• the length m of the common edge is at least 15% less than the length J 1 of the summit ridges (13, 14). But, of course, these proportions can be substantially different depending on the desired result, for example by changing the geometry of the base 8 and inclination angles of the faces or edges.
• the predetermined writing widths offered by the writing tip made according to the invention it is quite possible to adopt a different length between the first and second peak ridge (13, 14), or provide a width L substantially different from the length of the main base edge 11 and thus obtain two different writing widths by applying either the main face 10 against the sheet or only the main base edge 11 thereof .
• the other basic edges provide identical or different writing widths.
• each edge or face designed to be written has a clearance with respect to the rest of the writing tip 4 and the barrel 2 of the instrument so that writing is possible, and to ensure that that the angle of inclination of the writing instrument, that is to say the central axis Z, relative to the paper or any other medium, remains acceptable to the user.
• the angle of inclination of the common edge 23 with respect to the central axis Z is between 30 and 60 degrees.
• the angle formed by the main face 10 with the central axis Z is also included in this range.
• the angle formed between the first summit edge 13 and the second summit edge 14 is preferably between 150 and 90 degrees.
• each of the summit edges (13; 14) with the central axis Z is identical, and therefore between 45 and 75 degrees.
• the set of angular values indicated corresponds to angles measured on the side of the body 5 of the writing tip.
• top 9 is slightly offset on the side of the common edge 23 relative to the central axis Z, in order to increase the surface of the main face 10 and reduce the length m of the common edge 23.
• a base 8 of generally rectangular cross section is adopted and the main face 10 is arranged so that the main base edge 11 corresponds to one of the long sides of this rectangular section to obtain a maximum width L the largest possible, but also to obtain summit ridges (13, 14) of considerable length relative to the dimensions of the body 5.
• edges for making a path namely the main base edge 11, the summit edges (13, 14) and the common edge 23, have a rounded profile. This allows a tangential contact with the paper sheet on a significant surface, makes the tip less sensitive to deterioration and allows a significant variation in the angle of inclination of the writing instrument around the axis formed by this fish bone .
• the body of the writing tip is made by sintering a granular material in a mold.
• the granular material is advantageously a synthetic resin and especially a resin composed mainly of polypropylene, with which the hot sintering operation is easy.

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• Pens And Brushes (AREA)
• Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=37491958

Family Applications (1)

Country Status (11)

Families Citing this family (9)

Family Cites Families (17)

• 2006
  • 2006-04-12 FR FR0603240A patent/FR2899841B1/fr not_active Expired - Fee Related
• 2007
  • 2007-04-06 BR BRPI0710586-0A patent/BRPI0710586A2/pt not_active IP Right Cessation
  • 2007-04-06 CA CA002649220A patent/CA2649220A1/fr not_active Abandoned
  • 2007-04-06 JP JP2009504775A patent/JP2009533247A/ja active Pending
  • 2007-04-06 CN CNA2007800131237A patent/CN101421119A/zh active Pending
  • 2007-04-06 EP EP07731265A patent/EP2004422B1/de not_active Not-in-force
  • 2007-04-06 DE DE602007003579T patent/DE602007003579D1/de not_active Expired - Fee Related
  • 2007-04-06 AT AT07731265T patent/ATE450382T1/de not_active IP Right Cessation
  • 2007-04-06 US US12/296,387 patent/US20090317172A1/en not_active Abandoned
  • 2007-04-06 WO PCT/FR2007/000592 patent/WO2007116141A1/fr active Application Filing
  • 2007-04-06 MX MX2008013127A patent/MX2008013127A/es not_active Application Discontinuation

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